U.N. Strengthens Sanctions Against North Korea

By

Joe Lauria

Updated March 7, 2013 10:48 p.m. ET

UNITED NATIONS—The U.N. Security Council imposed its fourth and most stringent set of sanctions on North Korea in response to its latest nuclear-weapons test, a vote preceded by heightened Korean threats of an attack against the U.S.

The new measures, adopted unanimously by the 15-member council, require nations to crack down on North Korean financial transactions and check cargo suspected of containing nuclear and missile-related...